Subtract 3/30 from 50/70
50/70 - 3/30 is 43/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
50/70 = 50 × 3/70 × 3 = 150/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210 - Subtract the two like fractions:
150/210 - 21/210 = 150 - 21/210 = 129/210 - After reducing the fraction, the answer is 43/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70-6/30 50/70-3/60 50/70-9/30 50/70-3/90 50/70-15/30 50/70-21/30